<!DOCTYPE html>
<html>
<head>
    <meta charset='utf-8'/>
    <title></title>
    <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no'/>
    <script src='../assets/mapbox-gl-dev.js'></script>
    <link href='../assets/mapbox-gl.css' rel='stylesheet'/>
    <style>
        body {
            margin: 0;
            padding: 0;
        }

        #map {
            position: absolute;
            top: 0;
            bottom: 0;
            width: 100%;
        }
    </style>
</head>
<body>

<style>
    #menu {
        background: #fff;
        position: absolute;
        z-index: 1;
        top: 10px;
        right: 10px;
        border-radius: 3px;
        width: 120px;
        border: 1px solid rgba(0, 0, 0, 0.4);
        font-family: 'Open Sans', sans-serif;
    }

    #menu a {
        font-size: 13px;
        color: #404040;
        display: block;
        margin: 0;
        padding: 0;
        padding: 10px;
        text-decoration: none;
        border-bottom: 1px solid rgba(0, 0, 0, 0.25);
        text-align: center;
    }

    #menu a:last-child {
        border: none;
    }

    #menu a:hover {
        background-color: #f8f8f8;
        color: #404040;
    }

    #menu a.active {
        background-color: #3887be;
        color: #ffffff;
    }

    #menu a.active:hover {
        background: #3074a4;
    }
</style>

<nav id="menu"></nav>
<div id="map"></div>

<script>
    mapboxgl.accessToken = 'pk.eyJ1IjoibWFvcmV5IiwiYSI6ImNqNWhrenIwcDFvbXUyd3I2bTJxYzZ4em8ifQ.KHZIehQuWW9AsMaGtATdwA';
    var map = new mapboxgl.Map({
        container: 'map',
        style: 'mapbox://styles/mapbox/streets-v9',
        zoom: 15,
        center: [-71.97722138410576, -13.517379300798098]
    });

    map.on('load', function () {
        map.addSource('museums', {
            type: 'vector',
            url: 'mapbox://mapbox.2opop9hr'
        });
        map.addLayer({
            'id': 'museums',
            'type': 'circle',
            'source': 'museums',
            'source-layer': 'museum-cusco',
            'layout': {
                'visibility': 'visible'
            },
            'paint': {
                'circle-radius': 8,
                'circle-color': 'rgba(55,148,179,1)'
            }
        });

        map.addSource('contours', {
            type: 'vector',
            url: 'mapbox://mapbox.mapbox-terrain-v2'
        });
        map.addLayer({
            'id': 'contours',
            'type': 'line',
            'source': 'contours',
            'source-layer': 'contour',
            'layout': {
                'visibility': 'visible',
                'line-join': 'round',
                'line-cap': 'round'
            },
            'paint': {
                'line-color': '#877b59',
                'line-width': 1
            }
        });
    });

    var toggleableLayerIds = ['contours', 'museums'];

    for (var i = 0; i < toggleableLayerIds.length; i++) {
        var id = toggleableLayerIds[i];

        var link = document.createElement('a');
        link.href = '#';
        link.className = 'active';
        link.textContent = id;

        link.onclick = function (e) {
            var clickedLayer = this.textContent;
            e.preventDefault();
            e.stopPropagation();

            var visibility = map.getLayoutProperty(clickedLayer, 'visibility');

            if (visibility === 'visible') {
                map.setLayoutProperty(clickedLayer, 'visibility', 'none');
                this.className = '';
            } else {
                this.className = 'active';
                map.setLayoutProperty(clickedLayer, 'visibility', 'visible');
            }
        };

        var layers = document.getElementById('menu');
        layers.appendChild(link);
    }

</script>

</body>
</html>